Help!

[jjman9]

I have a 04crf150f and I have been having a little problem...
I have had the bike for a week now, and everything has been running fine..The other day I took 1 or 2 pretty good spills, however, the bike came out running fine..This morning I went for a ride and I noticed that when I ez off the clutch (i.e., in first gear) and I roll foward, I not only roll foward, but the bike runs as if I am giving the bike gas and revving the throttle (Even though I am not touching anything) On top of that, when I try to give the bike gas, the engine just chops and I don't gain any acceleration whatsoever... I have fiddled with the choke, but see no difference besides the speed (when my hand is off the throttle) I don't have too much experiance with dirt bike maitenance, but I called my dealer and they said that the spark plug tip could be chipped but it was hard to tell and I would have to bring it in next week.
So, sorry if this is hard to follow, but I can't figure it out! If anyone has any solution, or have experianced this problem please post as soon as possible, b/c as of now I can't ride! Thanks for you help, I appreciate it.

 

[agitt73]

go pick up a new plug and try it but it sounds like a lean condition to me
float may be sticking a little or there may be some thing in the float bowl
pluging the pilot jet at times

 

[jjman9]

I will pick up a new plug and see what happens....About the lean condition, can you please explain yourself a little more thoroughly because I am unfamiliar with the whole "float" and "sticking" deal.. Thanks! Any additional info. is aprreciated.

 

[jjman9]

Also, it has been in the low 30's around where I live and I keep my bike in the garage (low 40's) and for the first week I didn't have any problems, but as of late it has been pretty cold.. Can the temperature have anything to do with this condition?
In addition, I let my brother ride my bike the other day, and APPARENTLY

 

[jjman9]

he messed with the fuel screw or something, could adjusting this have an affect on the condition of the bike? Thanks

 

[jjman9]

I screwed the fuel screw out a turn or so and I noticed a slight improvment in acceleration, but the engine still bogs and throttle dies from almost 1/4 to WOT... But just not as bad... Should I give the screw a few more turns and see what happens?

 

[jjman9]

I was out this morning and after a couple minutes of just cruising around (without throttle input :) ) My pipe started to smoke and everything seemed to be not working correctly.. I am very concerned, but it might just be my plug i dono.

 

[agitt73]

its hard to explain you should buy a repair manual which will help you
better then i can explain the pipe smoking could be due to the moisture
comming out while the engine was warming up some 4-strokes will still apear top smoke after its warmed up all the way due to the hot air comming out
and hitting the cold air

 

[jjman9]

well i dont know if black smoke is what you mean:)

 

[prest989]

What oil is in it, also, change the plug, and clean the carb.